i have the manual inflate...and ive often wondered if this thing still works as i put it on each time...ive had this one 4 or 5 yrs...and to test it a person would have to pull on the manual trigger to find out..and that would cost 25 or so...i think its time for a new one...any suggestions please..my health isnt very good and i know i could not get in a boat if i fell into the water...thanks guys